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      <h1 class="mume-header" id="des%E5%8A%A0%E5%AF%86%E7%AE%97%E6%B3%95">DES&#x52A0;&#x5BC6;&#x7B97;&#x6CD5;</h1>

<p><span id="toc"></span></p>
<ul>
<li><a href="#des%E5%8A%A0%E5%AF%86%E7%AE%97%E6%B3%95">DES&#x52A0;&#x5BC6;&#x7B97;&#x6CD5;</a>
<ul>
<li><a href="#%E7%AE%80%E8%A6%81%E8%AF%B4%E6%98%8Etoc">&#x7B80;&#x8981;&#x8BF4;&#x660E;</a></li>
<li><a href="#%E7%AE%97%E6%B3%95%E6%B5%81%E7%A8%8Btoc">&#x7B97;&#x6CD5;&#x6D41;&#x7A0B;</a></li>
<li><a href="#%E7%AE%97%E6%B3%95%E6%AD%A5%E9%AA%A4toc">&#x7B97;&#x6CD5;&#x6B65;&#x9AA4;</a>
<ul>
<li><a href="#key-schedule%E8%AE%A1%E7%AE%97toc">Key Schedule&#x8BA1;&#x7B97;</a></li>
<li><a href="#%E5%8A%A0%E5%AF%86toc">&#x52A0;&#x5BC6;</a>
<ul>
<li><a href="#feistel%E5%87%BD%E6%95%B0toc">Feistel&#x51FD;&#x6570;</a></li>
</ul>
</li>
<li><a href="#%E8%A7%A3%E5%AF%86toc">&#x89E3;&#x5BC6;</a></li>
</ul>
</li>
<li><a href="#%E9%99%84%E5%BD%95toc">&#x9644;&#x5F55;</a></li>
<li><a href="#%E7%AC%A6%E5%8F%B7%E8%AF%B4%E6%98%8Etoc">&#x7B26;&#x53F7;&#x8BF4;&#x660E;</a>
<ul>
<li><a href="#tdeatoc">TDEA</a></li>
</ul>
</li>
<li><a href="#%E5%B8%B8%E9%87%8F%E8%A1%A8toc">&#x5E38;&#x91CF;&#x8868;</a></li>
<li><a href="#%E5%8F%82%E8%80%83%E8%B5%84%E6%96%99toc">&#x53C2;&#x8003;&#x8D44;&#x6599;</a></li>
</ul>
</li>
</ul>
<h2 class="mume-header" id="%E7%AE%80%E8%A6%81%E8%AF%B4%E6%98%8Etoc"><a href="#toc">&#x7B80;&#x8981;&#x8BF4;&#x660E;</a></h2>

<ul>
<li>&#x5BF9;&#x79F0;&#x52A0;&#x5BC6;&#x7B97;&#x6CD5;;</li>
<li>&#x52A0;&#x5BC6;&#x5757;&#x5927;&#x5C0F;: 64&#x4F4D;;</li>
<li>&#x5BC6;&#x94A5;&#x957F;&#x5EA6;: 64&#x4F4D;(&#x52A0;&#x5BC6;&#x7B97;&#x6CD5;&#x53EA;&#x7528;&#x4E86;&#x5176;&#x4E2D;&#x7684;56&#x4F4D;, &#x53E6;8&#x4F4D;&#x53EF;&#x4F5C;&#x4E3A;&#x6821;&#x9A8C;&#x4F4D;&#x4F7F;&#x7528;);</li>
<li>&#x8F93;&#x51FA;&#x5BC6;&#x6587;&#x957F;&#x5EA6;: 64&#x4F4D;;</li>
<li>&#x52A0;&#x5BC6;&#x8FED;&#x4EE3;&#x6B21;&#x6570;: 16&#x8F6E;;</li>
</ul>
<h2 class="mume-header" id="%E7%AE%97%E6%B3%95%E6%B5%81%E7%A8%8Btoc"><a href="#toc">&#x7B97;&#x6CD5;&#x6D41;&#x7A0B;</a></h2>

<div class="mermaid">graph TD;
    id1(&#x8F93;&#x5165;) --&gt; id2(&#x521D;&#x59CB;&#x7F6E;&#x6362;L0R0);
    id2 --&gt; id3_1(R0);
    id3_0 --&gt; rotate1((&#x5F02;&#x6216;));
    f1(f) --&gt; rotate1;
    k1(K1) --&gt; f1;
    id3_1 --&gt; f1;
    id2 --&gt; id3_0(L0);
    id3_1 --&gt; l1(L1);
    rotate1 --&gt; r1(R1);
    k2(K2) --&gt; f2(f);
    r1 --&gt; f2;
    f2 --&gt; rotate2((&#x5F02;&#x6216;));
    l1 --&gt; rotate2;
    rotate2 --&gt; r2(R2);
    r1 --&gt; l2(L2);
    r2 -.-&gt; fn(f);
    kn(kn) -.-&gt; fn(f);
    fn -.-&gt; rotaten((&#x5F02;&#x6216;));
    l2 -.-&gt; rotaten;
    rotaten -.-&gt; r15(R15);
    r2 -.-&gt; l15(L15);
    r15 --&gt; l16(L16);
    l15 --&gt; rotate16((&#x5F02;&#x6216;));
    k16(K16) --&gt; rotate16;
    rotate16 --&gt; r16(R16);
    l16 --&gt; r16l16(R16L16);
    r16 --&gt; r16l16;
    r16l16 --&gt; preout(&#x9006;&#x521D;&#x59CB;&#x7F6E;&#x6362;);
    preout --&gt; output(&#x8F93;&#x51FA;);
</div><h2 class="mume-header" id="%E7%AE%97%E6%B3%95%E6%AD%A5%E9%AA%A4toc"><a href="#toc">&#x7B97;&#x6CD5;&#x6B65;&#x9AA4;</a></h2>

<ul>
<li>&#x76F8;&#x5173;&#x77E9;&#x9635;&#x5E38;&#x91CF;&#x89C1;&#x9644;&#x5F55;;</li>
</ul>
<h3 class="mume-header" id="key-schedule%E8%AE%A1%E7%AE%97toc"><a href="#toc">Key Schedule&#x8BA1;&#x7B97;</a></h3>

<p>&#x8BB0;&#x6709;64&#x4F4D;&#x957F;&#x5BC6;&#x94A5;<span class="mathjax-exps">$KEY$</span>, &#x7F6E;&#x6362;<span class="mathjax-exps">$PC1_C$</span>/<span class="mathjax-exps">$PC1_D$</span>/<span class="mathjax-exps">$PC2$</span>, &#x53CA;&#x6BCF;&#x4E00;&#x8F6E;&#x8FED;&#x4EE3;&#x7684;&#x5FAA;&#x73AF;&#x5DE6;&#x79FB;&#x51FD;&#x6570;<span class="mathjax-exps">$LS$</span>. &#x901A;&#x8FC7;<span class="mathjax-exps">$PC1_C$</span>&#x548C;<span class="mathjax-exps">$PC1_D$</span>&#x7F6E;&#x6362;&#x9009;&#x62E9;&#x5F97;&#x5230;28&#x4F4D;&#x957F;&#x7684;<span class="mathjax-exps">$C_0$</span>&#x548C;<span class="mathjax-exps">$D_0$</span>, &#x90A3;&#x4E48;&#x7B2C;<span class="mathjax-exps">$i$</span>&#x8F6E;&#x7684;&#x52A0;&#x5BC6;&#x5BC6;&#x94A5;<span class="mathjax-exps">$K_i$</span>&#x8BA1;&#x7B97;&#x6B65;&#x9AA4;&#x5982;&#x4E0B;(<span class="mathjax-exps">$i=[0, 16)$</span>):</p>
<ul>
<li><span class="mathjax-exps">$C_{i+1} = C_i \lll LS[i]$</span>, <span class="mathjax-exps">$D_{i+1} = D_i \lll LS[i]$</span>;</li>
<li><span class="mathjax-exps">$K&apos; = C_{i+1} \ll 28 \quad |  \quad D_{i+1}$</span>;</li>
<li><span class="mathjax-exps">$PC2: K&apos; \rightarrow K_{i+1}$</span></li>
</ul>
<h3 class="mume-header" id="%E5%8A%A0%E5%AF%86toc"><a href="#toc">&#x52A0;&#x5BC6;</a></h3>

<p>&#x8BB0;&#x6709;64&#x4F4D;&#x8F93;&#x5165;&#x8F93;&#x5165;<span class="mathjax-exps">$Input$</span>, &#x521D;&#x59CB;&#x7F6E;&#x6362;<span class="mathjax-exps">$IP$</span>&#x548C;&#x5176;&#x9006;<span class="mathjax-exps">$IP^{-1}$</span>, feistel&#x51FD;&#x6570;<span class="mathjax-exps">$f$</span>, &#x6BCF;&#x4E00;&#x8F6E;&#x8FED;&#x4EE3;&#x7684;&#x52A0;&#x5BC6;&#x5BC6;&#x94A5;&#x96C6;<span class="mathjax-exps">$K$</span>. &#x901A;&#x8FC7;&#x521D;&#x59CB;&#x7F6E;&#x6362;<span class="mathjax-exps">$IP$</span>&#x6620;&#x5C04;&#x5F97;&#x5230;<span class="mathjax-exps">$LR$</span>, <span class="mathjax-exps">$LR = L_0 \ll 32 \quad | \quad R_0$</span>. &#x90A3;&#x4E48;&#x7B2C;<span class="mathjax-exps">$i$</span>&#x8F6E;&#x52A0;&#x5BC6;&#x8FC7;&#x7A0B;&#x53EF;&#x63CF;&#x8FF0;&#x5982;&#x4E0B;(<span class="mathjax-exps">$i=[0,15]$</span>):</p>
<ul>
<li><span class="mathjax-exps">$L_{i+1} = R_{i}$</span>;</li>
<li><span class="mathjax-exps">$R_{i+1} = L_{i} \oplus f(R_{i}, K_{i+1})$</span>;</li>
</ul>
<p>&#x901A;&#x8FC7;&#x4EE5;&#x4E0A;&#x8FED;&#x4EE3;16&#x8F6E;&#x540E;, &#x5F97;&#x5230;<span class="mathjax-exps">$L_{16}$</span>&#x548C;<span class="mathjax-exps">$R_{16}$</span>, &#x7EC4;&#x5408;&#x5F97;&#x5230;&#x9884;&#x8F93;&#x51FA;<span class="mathjax-exps">$RL = R_{16} \ll 32 \quad | \quad L_{16}$</span>, &#x518D;&#x901A;&#x8FC7;<span class="mathjax-exps">$IP^{-1}$</span>&#x7F6E;&#x6362;&#x5F97;&#x5230;&#x8F93;&#x51FA;&#x6570;&#x636E;<span class="mathjax-exps">$Output$</span>.</p>
<h4 class="mume-header" id="feistel%E5%87%BD%E6%95%B0toc"><a href="#toc">Feistel&#x51FD;&#x6570;</a></h4>

<p>&#x8BB0;&#x6709;&#x4ECE;32&#x4F4D;&#x6269;&#x5C55;&#x5230;48&#x4F4D;&#x6620;&#x5C04;&#x77E9;&#x9635;<span class="mathjax-exps">$E$</span>&#x548C;&#x538B;&#x7F29;&#x6620;&#x5C04;&#x77E9;&#x9635;<span class="mathjax-exps">$S_i$</span>, &#x53CA;&#x7F6E;&#x6362;<span class="mathjax-exps">$P$</span>. &#x5BF9;&#x4E8E;32&#x4F4D;&#x7684;&#x8F93;&#x5165;<span class="mathjax-exps">$R$</span>&#x548C;48&#x4F4D;&#x957F;&#x7684;&#x5BC6;&#x94A5;<span class="mathjax-exps">$K$</span>, <span class="mathjax-exps">$f$</span>&#x8BA1;&#x7B97;&#x8FC7;&#x7A0B;&#x5982;&#x4E0B;:</p>
<ul>
<li><span class="mathjax-exps">$E: R \rightarrow R&apos;$</span>;</li>
<li><span class="mathjax-exps">$t = K \oplus R&apos;$</span>;</li>
<li>&#x5C06;<span class="mathjax-exps">$t$</span>&#x6309;&#x6BCF;6&#x4F4D;&#x4E00;&#x7EC4;, &#x5171;8&#x7EC4;, &#x6BCF;&#x7EC4;&#x8BB0;&#x4E3A;<span class="mathjax-exps">$t_i$</span>(<span class="mathjax-exps">$i=[0,7]$</span>). &#x5C06;<span class="mathjax-exps">$t_i$</span>&#x7684;&#x7B2C;0&#x4F4D;&#x548C;&#x7B2C;5&#x4F4D;&#x7EC4;&#x5408;&#x5728;&#x4E00;&#x8D77;&#x7684;&#x5341;&#x8FDB;&#x5236;&#x6570;&#x8BB0;&#x4E3A;<span class="mathjax-exps">$m$</span>, &#x5C06;<span class="mathjax-exps">$t_i$</span>&#x4E2D;&#x95F4;&#x7684;4&#x4F4D;&#x7EC4;&#x5408;&#x5728;&#x4E00;&#x8D77;&#x8BB0;&#x4E3A;<span class="mathjax-exps">$n$</span>. &#x4F8B;<span class="mathjax-exps">$t_i=011011$</span>, &#x90A3;&#x4E48;<span class="mathjax-exps">$m=01=2$</span>, <span class="mathjax-exps">$n=1101=13$</span>;</li>
<li><span class="mathjax-exps">$S: t_i \rightarrow t_{i}^{&apos;}$</span>, &#x6620;&#x5C04;&#x65B9;&#x5F0F;&#x662F;<span class="mathjax-exps">$t_{i}^{&apos;}=S[m*16+n]$</span>, <span class="mathjax-exps">$t_{i}^{&apos;}$</span>&#x662F;4&#x4F4D;&#x7684;;</li>
<li>&#x5C06;<span class="mathjax-exps">$t_{0}^{&apos;} \cdots t_{7}^{&apos;}$</span>&#x62FC;&#x63A5;&#x7EC4;&#x5408;&#x5728;&#x4E00;&#x8D77;&#x5F97;&#x5230;<span class="mathjax-exps">$t_{0}^{&apos;}t_{1}^{&apos;}\dots t_{7}^{&apos;}$</span>&#x5F97;&#x5230;32&#x4F4D;&#x957F;&#x7684;&#x6570;&#x636E;, &#x8BB0;&#x4E3A;<span class="mathjax-exps">$d$</span>;</li>
<li><span class="mathjax-exps">$P: d \rightarrow d&apos;$</span>&#x7F6E;&#x6362;&#x5F97;&#x5230;f&#x7684;&#x8F93;&#x51FA;;</li>
</ul>
<h3 class="mume-header" id="%E8%A7%A3%E5%AF%86toc"><a href="#toc">&#x89E3;&#x5BC6;</a></h3>

<p>&#x89E3;&#x5BC6;&#x662F;&#x52A0;&#x5BC6;&#x7684;&#x9006;&#x8FC7;&#x7A0B;, &#x6B65;&#x9AA4;&#x7565;;</p>
<h2 class="mume-header" id="%E9%99%84%E5%BD%95toc"><a href="#toc">&#x9644;&#x5F55;</a></h2>

<h2 class="mume-header" id="%E7%AC%A6%E5%8F%B7%E8%AF%B4%E6%98%8Etoc"><a href="#toc">&#x7B26;&#x53F7;&#x8BF4;&#x660E;</a></h2>

<ul>
<li>&#x5B57;&#x8282;&#x5E8F;: &#x5927;&#x7AEF;&#x5E8F;;</li>
<li><span class="mathjax-exps">$\lll$</span>: &#x5FAA;&#x73AF;&#x5DE6;&#x79FB;;</li>
<li><span class="mathjax-exps">$\ll$</span>: &#x903B;&#x8F91;&#x5DE6;&#x79FB;;</li>
<li><span class="mathjax-exps">$\oplus$</span>: &#x4E8C;&#x8FDB;&#x5236;&#x52A0;&#x6A21;2;</li>
<li><span class="mathjax-exps">$p: S&apos; \rightarrow S$</span>: &#x901A;&#x8FC7;&#x6620;&#x5C04;(&#x7F6E;&#x6362;)<span class="mathjax-exps">$p$</span>, &#x4ECE;&#x96C6;<span class="mathjax-exps">$S&apos;$</span>&#x6620;&#x5C04;&#x5230;<span class="mathjax-exps">$S$</span>. &#x672C;&#x6587;&#x4E2D;, &#x5982;&#x65E0;&#x7279;&#x522B;&#x8BF4;&#x660E;, &#x5C31;&#x662F;&#x5C06;<span class="mathjax-exps">$S&apos;$</span>&#x7684;&#x7B2C;<span class="mathjax-exps">$p[i]$</span>&#x4F4D;&#x653E;&#x5728;<span class="mathjax-exps">$S$</span>&#x7684;&#x7B2C;<span class="mathjax-exps">$i$</span>&#x4F4D;;</li>
</ul>
<h3 class="mume-header" id="tdeatoc"><a href="#toc">TDEA</a></h3>

<p>TDEA&#x4E09;&#x91CD;DES&#x52A0;&#x5BC6;: &#x901A;&#x8FC7;&#x4E09;&#x7EC4;&#x5BC6;&#x94A5;<span class="mathjax-exps">$[K1, K2, K3]$</span>&#x91CD;&#x590D;&#x4E09;&#x6B21;&#x52A0;&#x5BC6;&#x89E3;&#x5BC6;. &#x5373;&#x52A0;&#x5BC6;&#x8FC7;&#x7A0B;: &#x7528;&#x5BC6;&#x94A5;<span class="mathjax-exps">$K1$</span>DES&#x52A0;&#x5BC6;, <span class="mathjax-exps">$K2$</span>DES&#x89E3;&#x5BC6;, <span class="mathjax-exps">$K3$</span>DES&#x52A0;&#x5BC6;; &#x89E3;&#x5BC6;&#x662F;&#x5176;&#x9006;&#x8FC7;&#x7A0B;; &#x63CF;&#x8FF0;&#x5982;&#x4E0B;:</p>
<p></p><div class="mathjax-exps">$$\begin{aligned} Input \rightarrow DES(E_{K1}) \rightarrow DES(D_{K2}) \rightarrow DES(E_{K3}) \rightarrow Output \\ \quad Input \rightarrow DES(D_{K3}) \rightarrow DES(E_{K2}) \rightarrow DES(D_{K1}) \rightarrow Output \end{aligned}$$</div><p></p>
<p>&#x6807;&#x51C6;&#x4E2D;<span class="mathjax-exps">$[K1, K2, K3]$</span>&#x6709;&#x5982;&#x4E0B;&#x4E09;&#x79CD;&#x53EF;&#x80FD;:</p>
<ul>
<li><span class="mathjax-exps">$K1 \neq K2 \neq K3$</span>;</li>
<li><span class="mathjax-exps">$K1 \neq K2, K3 = K1$</span>;</li>
<li><span class="mathjax-exps">$K1 = K2 = K3$</span>;</li>
</ul>
<h2 class="mume-header" id="%E5%B8%B8%E9%87%8F%E8%A1%A8toc"><a href="#toc">&#x5E38;&#x91CF;&#x8868;</a></h2>

<pre data-role="codeBlock" data-info="Rust" class="language-rust"><span class="token comment">/// &#x521D;&#x59CB;&#x7F6E;&#x6362;IP  </span>
<span class="token keyword">const</span> DES_IP<span class="token punctuation">:</span> <span class="token punctuation">[</span>u8<span class="token punctuation">;</span> <span class="token number">64</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token punctuation">[</span>
<span class="token number">58</span><span class="token punctuation">,</span> <span class="token number">50</span><span class="token punctuation">,</span> <span class="token number">42</span><span class="token punctuation">,</span> <span class="token number">34</span><span class="token punctuation">,</span> <span class="token number">26</span><span class="token punctuation">,</span> <span class="token number">18</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span>
<span class="token number">60</span><span class="token punctuation">,</span> <span class="token number">52</span><span class="token punctuation">,</span> <span class="token number">44</span><span class="token punctuation">,</span> <span class="token number">36</span><span class="token punctuation">,</span> <span class="token number">28</span><span class="token punctuation">,</span> <span class="token number">20</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span>
<span class="token number">62</span><span class="token punctuation">,</span> <span class="token number">54</span><span class="token punctuation">,</span> <span class="token number">46</span><span class="token punctuation">,</span> <span class="token number">38</span><span class="token punctuation">,</span> <span class="token number">30</span><span class="token punctuation">,</span> <span class="token number">22</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span>
<span class="token number">64</span><span class="token punctuation">,</span> <span class="token number">56</span><span class="token punctuation">,</span> <span class="token number">48</span><span class="token punctuation">,</span> <span class="token number">40</span><span class="token punctuation">,</span> <span class="token number">32</span><span class="token punctuation">,</span> <span class="token number">24</span><span class="token punctuation">,</span> <span class="token number">16</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span>
<span class="token number">57</span><span class="token punctuation">,</span> <span class="token number">49</span><span class="token punctuation">,</span> <span class="token number">41</span><span class="token punctuation">,</span> <span class="token number">33</span><span class="token punctuation">,</span> <span class="token number">25</span><span class="token punctuation">,</span> <span class="token number">17</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span>
<span class="token number">59</span><span class="token punctuation">,</span> <span class="token number">51</span><span class="token punctuation">,</span> <span class="token number">43</span><span class="token punctuation">,</span> <span class="token number">35</span><span class="token punctuation">,</span> <span class="token number">27</span><span class="token punctuation">,</span> <span class="token number">19</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span>
<span class="token number">61</span><span class="token punctuation">,</span> <span class="token number">53</span><span class="token punctuation">,</span> <span class="token number">45</span><span class="token punctuation">,</span> <span class="token number">37</span><span class="token punctuation">,</span> <span class="token number">29</span><span class="token punctuation">,</span> <span class="token number">21</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span>
<span class="token number">63</span><span class="token punctuation">,</span> <span class="token number">55</span><span class="token punctuation">,</span> <span class="token number">47</span><span class="token punctuation">,</span> <span class="token number">39</span><span class="token punctuation">,</span> <span class="token number">31</span><span class="token punctuation">,</span> <span class="token number">23</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span>
<span class="token punctuation">]</span><span class="token punctuation">;</span>
</pre><pre data-role="codeBlock" data-info="Rust" class="language-rust"><span class="token comment">/// &#x9006;&#x521D;&#x59CB;&#x7F6E;&#x6362;IIP  </span>
<span class="token keyword">const</span> DES_IIP<span class="token punctuation">:</span> <span class="token punctuation">[</span>u8<span class="token punctuation">;</span> <span class="token number">64</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token punctuation">[</span>
<span class="token number">40</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">48</span><span class="token punctuation">,</span> <span class="token number">16</span><span class="token punctuation">,</span> <span class="token number">56</span><span class="token punctuation">,</span> <span class="token number">24</span><span class="token punctuation">,</span> <span class="token number">64</span><span class="token punctuation">,</span> <span class="token number">32</span><span class="token punctuation">,</span>
<span class="token number">39</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">47</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">55</span><span class="token punctuation">,</span> <span class="token number">23</span><span class="token punctuation">,</span> <span class="token number">63</span><span class="token punctuation">,</span> <span class="token number">31</span><span class="token punctuation">,</span>
<span class="token number">38</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">46</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">54</span><span class="token punctuation">,</span> <span class="token number">22</span><span class="token punctuation">,</span> <span class="token number">62</span><span class="token punctuation">,</span> <span class="token number">30</span><span class="token punctuation">,</span>
<span class="token number">37</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">45</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">53</span><span class="token punctuation">,</span> <span class="token number">21</span><span class="token punctuation">,</span> <span class="token number">61</span><span class="token punctuation">,</span> <span class="token number">29</span><span class="token punctuation">,</span>
<span class="token number">36</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">44</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">52</span><span class="token punctuation">,</span> <span class="token number">20</span><span class="token punctuation">,</span> <span class="token number">60</span><span class="token punctuation">,</span> <span class="token number">28</span><span class="token punctuation">,</span>
<span class="token number">35</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">43</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">51</span><span class="token punctuation">,</span> <span class="token number">19</span><span class="token punctuation">,</span> <span class="token number">59</span><span class="token punctuation">,</span> <span class="token number">27</span><span class="token punctuation">,</span>
<span class="token number">34</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">42</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">50</span><span class="token punctuation">,</span> <span class="token number">18</span><span class="token punctuation">,</span> <span class="token number">58</span><span class="token punctuation">,</span> <span class="token number">26</span><span class="token punctuation">,</span>
<span class="token number">33</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">41</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">49</span><span class="token punctuation">,</span> <span class="token number">17</span><span class="token punctuation">,</span> <span class="token number">57</span><span class="token punctuation">,</span> <span class="token number">25</span><span class="token punctuation">,</span>
<span class="token punctuation">]</span><span class="token punctuation">;</span>
</pre><pre data-role="codeBlock" data-info="Rust" class="language-rust"><span class="token comment">/// feistel&#x51FD;&#x6570;&#x4F7F;&#x7528;&#x7684;&#x76F8;&#x5173;&#x6620;&#x5C04;&#x8868;  </span>
<span class="token comment">/// 32&#x4F4D;&#x957F;&#x5EA6;&#x6570;&#x636E;&#x6620;&#x5C04;&#x5230;48&#x4F4D;&#x957F;&#x6570;&#x636E;&#x7684;&#x4F4D;&#x6620;&#x5C04;&#x8868;  </span>
<span class="token keyword">const</span> DES_E<span class="token punctuation">:</span> <span class="token punctuation">[</span>u8<span class="token punctuation">;</span> <span class="token number">48</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token punctuation">[</span>
<span class="token number">32</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span>
<span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span>
<span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span>
<span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">16</span><span class="token punctuation">,</span> <span class="token number">17</span><span class="token punctuation">,</span>
<span class="token number">16</span><span class="token punctuation">,</span> <span class="token number">17</span><span class="token punctuation">,</span> <span class="token number">18</span><span class="token punctuation">,</span> <span class="token number">19</span><span class="token punctuation">,</span> <span class="token number">20</span><span class="token punctuation">,</span> <span class="token number">21</span><span class="token punctuation">,</span>
<span class="token number">20</span><span class="token punctuation">,</span> <span class="token number">21</span><span class="token punctuation">,</span> <span class="token number">22</span><span class="token punctuation">,</span> <span class="token number">23</span><span class="token punctuation">,</span> <span class="token number">24</span><span class="token punctuation">,</span> <span class="token number">25</span><span class="token punctuation">,</span>
<span class="token number">24</span><span class="token punctuation">,</span> <span class="token number">25</span><span class="token punctuation">,</span> <span class="token number">26</span><span class="token punctuation">,</span> <span class="token number">27</span><span class="token punctuation">,</span> <span class="token number">28</span><span class="token punctuation">,</span> <span class="token number">29</span><span class="token punctuation">,</span>
<span class="token number">28</span><span class="token punctuation">,</span> <span class="token number">29</span><span class="token punctuation">,</span> <span class="token number">30</span><span class="token punctuation">,</span> <span class="token number">31</span><span class="token punctuation">,</span> <span class="token number">32</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span>
<span class="token punctuation">]</span><span class="token punctuation">;</span>

<span class="token comment">/// 48&#x4F4D;&#x957F;&#x6570;&#x636E;&#x6620;&#x5C04;&#x5230;32&#x4F4D;&#x957F;&#x6570;&#x636E;&#x7684;&#x6620;&#x5C04;&#x8868;, Si&#x5C06;&#x7B2C;i&#x4E2A;6&#x4F4D;&#x6570;&#x636E;&#x6620;&#x5C04;&#x5230;4&#x4F4D;&#x957F;&#x6570;&#x636E;  </span>
<span class="token keyword">const</span> DES_S1<span class="token punctuation">:</span> <span class="token punctuation">[</span>u8<span class="token punctuation">;</span> <span class="token number">64</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token punctuation">[</span>
<span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span>
<span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span>
<span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span>
<span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span>
<span class="token punctuation">]</span><span class="token punctuation">;</span>

<span class="token keyword">const</span> DES_S2<span class="token punctuation">:</span> <span class="token punctuation">[</span>u8<span class="token punctuation">;</span> <span class="token number">64</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token punctuation">[</span>
<span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span>
<span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span>
<span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span>
<span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span>
<span class="token punctuation">]</span><span class="token punctuation">;</span>

<span class="token keyword">const</span> DES_S3<span class="token punctuation">:</span> <span class="token punctuation">[</span>u8<span class="token punctuation">;</span> <span class="token number">64</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token punctuation">[</span>
<span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span>
<span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span>
<span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span>
<span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span>
<span class="token punctuation">]</span><span class="token punctuation">;</span>

<span class="token keyword">const</span> DES_S4<span class="token punctuation">:</span> <span class="token punctuation">[</span>u8<span class="token punctuation">;</span> <span class="token number">64</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token punctuation">[</span>
<span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span>
<span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span>
<span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span>
<span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span>
<span class="token punctuation">]</span><span class="token punctuation">;</span>

<span class="token keyword">const</span> DES_S5<span class="token punctuation">:</span> <span class="token punctuation">[</span>u8<span class="token punctuation">;</span> <span class="token number">64</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token punctuation">[</span>
<span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span>
<span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span>
<span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span>
<span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span>
<span class="token punctuation">]</span><span class="token punctuation">;</span>

<span class="token keyword">const</span> DES_S6<span class="token punctuation">:</span> <span class="token punctuation">[</span>u8<span class="token punctuation">;</span> <span class="token number">64</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token punctuation">[</span>
<span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span>
<span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span>
<span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span>
<span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span>
<span class="token punctuation">]</span><span class="token punctuation">;</span>

<span class="token keyword">const</span> DES_S7<span class="token punctuation">:</span> <span class="token punctuation">[</span>u8<span class="token punctuation">;</span> <span class="token number">64</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token punctuation">[</span>
<span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span>
<span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span>
<span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span>
<span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span>
<span class="token punctuation">]</span><span class="token punctuation">;</span>

<span class="token keyword">const</span> DES_S8<span class="token punctuation">:</span> <span class="token punctuation">[</span>u8<span class="token punctuation">;</span> <span class="token number">64</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token punctuation">[</span>
<span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span>
<span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span>
<span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span>
<span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span>
<span class="token punctuation">]</span><span class="token punctuation">;</span>

<span class="token comment">/// feistel&#x4F7F;&#x7528;&#x7684;&#x7F6E;&#x6362;&#x51FD;&#x6570;  </span>
<span class="token keyword">const</span> DES_P<span class="token punctuation">:</span> <span class="token punctuation">[</span>u8<span class="token punctuation">;</span> <span class="token number">32</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token punctuation">[</span>
<span class="token number">16</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">20</span><span class="token punctuation">,</span> <span class="token number">21</span><span class="token punctuation">,</span>
<span class="token number">29</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">28</span><span class="token punctuation">,</span> <span class="token number">17</span><span class="token punctuation">,</span>
<span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">23</span><span class="token punctuation">,</span> <span class="token number">26</span><span class="token punctuation">,</span>
<span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">18</span><span class="token punctuation">,</span> <span class="token number">31</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span>
<span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">24</span><span class="token punctuation">,</span> <span class="token number">14</span><span class="token punctuation">,</span>
<span class="token number">32</span><span class="token punctuation">,</span> <span class="token number">27</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span>
<span class="token number">19</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">30</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span>
<span class="token number">22</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">25</span><span class="token punctuation">,</span>
<span class="token punctuation">]</span><span class="token punctuation">;</span>
</pre><pre data-role="codeBlock" data-info="Rust" class="language-rust"><span class="token comment">/// key schedule&#x5BC6;&#x94A5;&#x8C03;&#x5EA6;&#x8868;&#x8BA1;&#x7B97;&#x4F7F;&#x7528;&#x5230;&#x7684;&#x6620;&#x5C04;&#x8868;  </span>
<span class="token keyword">const</span> DES_PC1_C<span class="token punctuation">:</span> <span class="token punctuation">[</span>u8<span class="token punctuation">;</span> <span class="token number">28</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token punctuation">[</span>
<span class="token number">57</span><span class="token punctuation">,</span> <span class="token number">49</span><span class="token punctuation">,</span> <span class="token number">41</span><span class="token punctuation">,</span> <span class="token number">33</span><span class="token punctuation">,</span> <span class="token number">25</span><span class="token punctuation">,</span> <span class="token number">17</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span>
<span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">58</span><span class="token punctuation">,</span> <span class="token number">50</span><span class="token punctuation">,</span> <span class="token number">42</span><span class="token punctuation">,</span> <span class="token number">34</span><span class="token punctuation">,</span> <span class="token number">26</span><span class="token punctuation">,</span> <span class="token number">18</span><span class="token punctuation">,</span>
<span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">59</span><span class="token punctuation">,</span> <span class="token number">51</span><span class="token punctuation">,</span> <span class="token number">43</span><span class="token punctuation">,</span> <span class="token number">35</span><span class="token punctuation">,</span> <span class="token number">27</span><span class="token punctuation">,</span>
<span class="token number">19</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">60</span><span class="token punctuation">,</span> <span class="token number">52</span><span class="token punctuation">,</span> <span class="token number">44</span><span class="token punctuation">,</span> <span class="token number">36</span><span class="token punctuation">,</span>
<span class="token punctuation">]</span><span class="token punctuation">;</span>  

<span class="token keyword">const</span> DES_PC1_D<span class="token punctuation">:</span> <span class="token punctuation">[</span>u8<span class="token punctuation">;</span> <span class="token number">28</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token punctuation">[</span>
<span class="token number">63</span><span class="token punctuation">,</span> <span class="token number">55</span><span class="token punctuation">,</span> <span class="token number">47</span><span class="token punctuation">,</span> <span class="token number">39</span><span class="token punctuation">,</span> <span class="token number">31</span><span class="token punctuation">,</span> <span class="token number">23</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span>
<span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">62</span><span class="token punctuation">,</span> <span class="token number">54</span><span class="token punctuation">,</span> <span class="token number">46</span><span class="token punctuation">,</span> <span class="token number">38</span><span class="token punctuation">,</span> <span class="token number">30</span><span class="token punctuation">,</span> <span class="token number">22</span><span class="token punctuation">,</span>
<span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">61</span><span class="token punctuation">,</span> <span class="token number">53</span><span class="token punctuation">,</span> <span class="token number">45</span><span class="token punctuation">,</span> <span class="token number">37</span><span class="token punctuation">,</span> <span class="token number">29</span><span class="token punctuation">,</span>
<span class="token number">21</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">28</span><span class="token punctuation">,</span> <span class="token number">20</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span>
<span class="token punctuation">]</span><span class="token punctuation">;</span>  

<span class="token keyword">const</span> DES_PC2<span class="token punctuation">:</span> <span class="token punctuation">[</span>u8<span class="token punctuation">;</span> <span class="token number">48</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token punctuation">[</span>
<span class="token number">14</span><span class="token punctuation">,</span> <span class="token number">17</span><span class="token punctuation">,</span> <span class="token number">11</span><span class="token punctuation">,</span> <span class="token number">24</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span>
<span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">28</span><span class="token punctuation">,</span> <span class="token number">15</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">21</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span>
<span class="token number">23</span><span class="token punctuation">,</span> <span class="token number">19</span><span class="token punctuation">,</span> <span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">26</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span>
<span class="token number">16</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">27</span><span class="token punctuation">,</span> <span class="token number">20</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span>
<span class="token number">41</span><span class="token punctuation">,</span> <span class="token number">52</span><span class="token punctuation">,</span> <span class="token number">31</span><span class="token punctuation">,</span> <span class="token number">37</span><span class="token punctuation">,</span> <span class="token number">47</span><span class="token punctuation">,</span> <span class="token number">55</span><span class="token punctuation">,</span>
<span class="token number">30</span><span class="token punctuation">,</span> <span class="token number">40</span><span class="token punctuation">,</span> <span class="token number">51</span><span class="token punctuation">,</span> <span class="token number">45</span><span class="token punctuation">,</span> <span class="token number">33</span><span class="token punctuation">,</span> <span class="token number">48</span><span class="token punctuation">,</span>
<span class="token number">44</span><span class="token punctuation">,</span> <span class="token number">49</span><span class="token punctuation">,</span> <span class="token number">39</span><span class="token punctuation">,</span> <span class="token number">56</span><span class="token punctuation">,</span> <span class="token number">34</span><span class="token punctuation">,</span> <span class="token number">53</span><span class="token punctuation">,</span>
<span class="token number">46</span><span class="token punctuation">,</span> <span class="token number">42</span><span class="token punctuation">,</span> <span class="token number">50</span><span class="token punctuation">,</span> <span class="token number">36</span><span class="token punctuation">,</span> <span class="token number">29</span><span class="token punctuation">,</span> <span class="token number">32</span><span class="token punctuation">,</span>
<span class="token punctuation">]</span><span class="token punctuation">;</span>

<span class="token comment">/// &#x6BCF;&#x8F6E;&#x5BC6;&#x94A5;&#x8BA1;&#x7B97;&#x7684;&#x5DE6;&#x79FB;&#x4F4D;&#x6570;  </span>
<span class="token keyword">const</span> DES_LS<span class="token punctuation">:</span> <span class="token punctuation">[</span>u8<span class="token punctuation">;</span> <span class="token number">16</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token punctuation">[</span>
<span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span>
<span class="token punctuation">]</span><span class="token punctuation">;</span>
</pre><h2 class="mume-header" id="%E5%8F%82%E8%80%83%E8%B5%84%E6%96%99toc"><a href="#toc">&#x53C2;&#x8003;&#x8D44;&#x6599;</a></h2>

<ul>
<li>FIPS 46-3;</li>
</ul>

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